19 December 2016
- 22:2022:20, 19 December 2016 diff hist −10 Appropriate technology →Paul Polak: The Death of Appropriate Technology organisations
- 22:1822:18, 19 December 2016 diff hist −5 Appropriate technology →Paul Polak: The Death of Appropriate Technology organisations
- 21:2621:26, 19 December 2016 diff hist −19 Appropriate technology →Background and definition